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- Title
CAPITAL OR INCOME BREEDING CRABS: WHO ARE THE BETTER INVADERS?
- Authors
YIWEN ZENG; MCLAY, COLIN; YEO, DARREN C. J.
- Abstract
A recent study by Griffen et al. (2012) drew a link between invasiveness and breeding strategy (income or capital breeding), a hitherto unconsidered life-history trait, in crabs. The methods used by the authors identified Carcinus maenas (Linnaeus, 1758) as a capital breeder and Hemigrapsus sanguineus (De Haan, 1853) as an income breeder. We extend this association of breeding strategies and invasiveness to other crab species and note that crabs in general are capital breeders based on the concurrent opposing trends of gonadosomatic index and hepatosomatic index during secondary vitellogenesis (indicating an endogenous source of nutrients for reproduction). We identify possible reasons why H. sanguineus may be regarded as an exception to this brachyuran life history pattern. Given that some species could be capable of a mixed breeding strategy, we propose experimental methods for determining such strategies.
- Subjects
CARCINUS maenas; HEMIGRAPSUS; CRABS; BREEDING; DECAPODA
- Publication
Crustaceana, 2014, Vol 87, Issue 14, p1648
- ISSN
0011-216X
- Publication type
Article
- DOI
10.1163/15685403-00003385